Thread: Speed of Optos on BoBs
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21-08-2012 #12
Last Activity: 17-03-2017
not odd at all... those optos need driving and the parallel port on some PCs isnt up to the job. The question I would ask is where are the LEDs and the 74HC14 being powered from?
Also what are the pull up resistors either side of the opto?
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